package com.atguigu.threadlocal;

import java.util.Random;

public class ThreadLocalTest {
//    public static Map<String,Object> data=new Hashtable<>();
    public static ThreadLocal<Object> threadLocal=new ThreadLocal<>();
    private static Random random=new Random();

    public static class Task implements Runnable{
        @Override
        public void run() {
            threadLocal.set("abc");
            threadLocal.set("bbj");
            System.out.println(threadLocal.get());

            /*
            //在Run方法中，随机生成一个变量（线程要关联的数据），然后以当前线程名为key保存到map中
            Integer i = random.nextInt(1000);
            //获取当前线程名
            String name = Thread.currentThread().getName();
            System.out.println("线程["+name+"]生成的随机数是："+i);
//            data.put(name,i);
            threadLocal.set(i);

            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            new OrderService().createOrder();
            //在Run方法结束之前，以当前线程名获取出数据并打印。查看是否可以取出操作
//            Object o = data.get(name);
            Object o = threadLocal.get();
            System.out.println("在线程["+name+"]快结束时取出关联的数据是："+o);
            */
        }
    }

    public static void main(String[] args) {
        for (int i = 0; i < 3; i++) {
            new Thread(new Task()).start();
        }
    }
}
